Frittata Goodness

1 1/2 cup diced onion1 cup diced bell pepper1 1/2 cup diced mushrooms5 oz spinach1 tbsp olive oil16 oz extra firm tofu16 oz firm tofu1/2 cup nutritional yeast2 tbsp soy sauce1/2 tsp turmeric1/2 tsp pepper2 tsp Dijon mustardpreheat oven to 350 degreessaute onions and bell pepper until onions are softadd mushrooms, cook 1 minuteadd spinach, cook until wilteddrain tofuin a large bowl mash the tofu